#loginBox{
    width: 500px;
    height: 360px;
    border: 1px solid #eee;
    position: absolute;
    padding: 0 20px;
    box-sizing: border-box;
    left: 50%;
    top: 50%;
    margin-left: -250px;
    margin-top: -180px;
}
#loginBox h1{
    text-align: center;
}
#loginBox .btnBox{
    text-align: center;
}